Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1989-07-11
1990-05-22
Massie, Jerome W.
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 20, E02D 2914
Patent
active
049272900
ABSTRACT:
A manhole cover support resistant to infiltration of surface water is shown. Such support is adapted for emplacing over and raising the effective grade of an existing manhole cover receiving structure and accommodating a new layer of paving around its perimeter and a manhole cover therewithin. The support is characterized by: a body that has at least one adjustable joint for rendering the cover support adjustable in its outer perimeter dimension, the body comprising a base having a ledge for a manhole cover, the ledge having a lateral cover keeper arising therefrom; and deformable seal elements comprising synthetic and/or natural resin-containing material, the seal elements being adapted to interact with deformable plug means for the adjustable joints to block substantial infiltration of surface water, and one of the seal elements being disposed on the ledge and at least another of the seal elements being disposed substantially around the outer perimeter of the body.
REFERENCES:
patent: 1908909 (1933-05-01), Manz
patent: 3773428 (1973-11-01), Bowman
patent: 3891337 (1975-06-01), McCoy
patent: 4440407 (1984-04-01), Gagas
patent: 4582450 (1986-04-01), Neil
patent: 4828274 (1989-05-01), Stannard
patent: 4834574 (1989-05-01), Bowman
Massie Jerome W.
Smith Matthew
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